User blog comment:Latios+Gardevoir/NEW REPEL TRICK?/@comment-32358261-20170817222714

Only works in core games sorry. It'll make roam legends way to easy to encounter. Though honestly I rather the repel trick to work with the legendary Pokemon like regular roam Pokemon like in the core games. Basically they escape on the first turn of battle so you have to chase it. Still annoying but I'd prefer to do this than just stay in the same area and just wait it out.